如何从Node.js中的HTTP post方法中提取表单数据(form[method="post"])和文件上传?
我看了文件,谷歌了一下,什么都没找到。
function (request, response) {
//request.post????
}
有图书馆或黑客吗?
如何从Node.js中的HTTP post方法中提取表单数据(form[method="post"])和文件上传?
我看了文件,谷歌了一下,什么都没找到。
function (request, response) {
//request.post????
}
有图书馆或黑客吗?
当前回答
不使用express也可以提取post参数。
1: NMP安装多方
2:导入多方。As var multiparty = require('multiparty');
3: `
if(req.method ==='POST'){
var form = new multiparty.Form();
form.parse(req, function(err, fields, files) {
console.log(fields['userfile1'][0]);
});
}
4:和HTML形式是。
<form method=POST enctype=multipart/form-data>
<input type=text name=userfile1><br>
<input type=submit>
</form>
我希望这对你有用。谢谢。
其他回答
要详细说明使用URLSearchParams:
Node.js知识:如何读取POST数据? 类:URLSearchParams .js文档 MDN: URLSearchParams
const http = require('http');
const POST_HTML =
'<html><head><title>Post Example</title></head>' +
'<body>' +
'<form method="post">' +
'Input 1: <input name="input1"><br>' +
'Input 2: <input name="input2"><br>' +
'Input 1: <input name="input1"><br>' +
'<input type="submit">' +
'</form>' +
'</body></html>';
const FORM_DATA = 'application/x-www-form-urlencoded';
function processFormData(body) {
const params = new URLSearchParams(body);
for ([name, value] of params.entries()) console.log(`${name}: ${value}`);
}
// req: http.IncomingMessage
// res: http.ServerResponse
//
function requestListener(req, res) {
const contentType = req.headers['content-type'];
let body = '';
const append = (chunk) => {
body += chunk;
};
const complete = () => {
if (contentType === FORM_DATA) processFormData(body);
res.writeHead(200);
res.end(POST_HTML);
};
req.on('data', append);
req.on('end', complete);
}
http.createServer(requestListener).listen(8080);
$ node index.js
input1: one
input2: two
input1: three
您可以使用“request - Simplified HTTP client”和Javascript Promise轻松地发送和获取POST请求的响应。
var request = require('request');
function getData() {
var options = {
url: 'https://example.com',
headers: {
'Content-Type': 'application/json'
}
};
return new Promise(function (resolve, reject) {
var responseData;
var req = request.post(options, (err, res, body) => {
if (err) {
console.log(err);
reject(err);
} else {
console.log("Responce Data", JSON.parse(body));
responseData = body;
resolve(responseData);
}
});
});
}
如果你更喜欢使用纯Node.js,那么你可以提取POST数据,如下所示:
// Dependencies const StringDecoder = require('string_decoder').StringDecoder; const http = require('http'); // Instantiate the HTTP server. const httpServer = http.createServer((request, response) => { // Get the payload, if any. const decoder = new StringDecoder('utf-8'); let payload = ''; request.on('data', (data) => { payload += decoder.write(data); }); request.on('end', () => { payload += decoder.end(); // Parse payload to object. payload = JSON.parse(payload); // Do smoething with the payload.... }); }; // Start the HTTP server. const port = 3000; httpServer.listen(port, () => { console.log(`The server is listening on port ${port}`); });
你可以使用querystring模块:
var qs = require('querystring');
function (request, response) {
if (request.method == 'POST') {
var body = '';
request.on('data', function (data) {
body += data;
// Too much POST data, kill the connection!
// 1e6 === 1 * Math.pow(10, 6) === 1 * 1000000 ~~~ 1MB
if (body.length > 1e6)
request.connection.destroy();
});
request.on('end', function () {
var post = qs.parse(body);
// use post['blah'], etc.
});
}
}
现在,例如,如果你有一个名为age的输入字段,你可以使用变量post访问它:
console.log(post.age);
如果它涉及文件上传,浏览器通常以“multipart/form-data”内容类型发送它。 您可以在这种情况下使用它
var multipart = require('multipart');
multipart.parse(req)
参考1
参考2